/*
 * MIT License
 *
 * Copyright (c) 2020 wen.gu <454727014@qq.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

 /***************************************************************************
 * Name: ipc_service.h
 *
 * Purpose: the serivce end implementation for ipc communication
 *
 * Developer:
 *   wen.gu , 2020-5-18
 *
 * TODO:
 *
 ***************************************************************************/

 /******************************************************************************
 **    INCLUDES
 ******************************************************************************/
#ifndef __PANDA_SYS_IPC_SERVICE_H__
#define __PANDA_SYS_IPC_SERVICE_H__

#include <functional>
#include <memory>

#include "panda/sys/sys_types.h"

namespace panda
{
namespace sys
{
/******************************************************************************
 **    MACROS
 ******************************************************************************/

 /******************************************************************************
 **    TYPE DEFINITIONS
 ******************************************************************************/

 /******************************************************************************
 **    CLASSES/FUNCTIONS DEFINITIONS
 ******************************************************************************/
class SYS_CLASS IpcService final     /**use unix domain sockt implementation */
{
public:
    using PandaErrc = panda::core::PandaErrc;

    /** params:
     *  [1] int32_t, client id, mean that which client send data to current service.
     *  [2] const uint8_t*, data buffer point 
     *  [3] uint32_t, received data size
     */
    using DataReceiveHandler = std::function<void(int32_t, const uint8_t*, uint32_t)>;

    /**params:
     * [1] int32_t, client id.
     * [2] bool, true: connected, false: diconnected,        
     */
    using ConnectionStateHandler = std::function<void(int32_t, bool)>;
public:
    IpcService(const std::string& srvName, ConnectionStateHandler csh);
    ~IpcService();
public:
    PandaErrc start(DataReceiveHandler cb);
    void stop();

    /**
     *  clientId: -1,like broadcast,send to all clients.
     */
    PandaErrc sendData(int32_t clientId, const uint8_t* data, uint32_t size);
private:
    class impl;
    std::unique_ptr<impl> mImpl;
};


} /** namespace sys */
} /** namespace panda*/

#endif /** !__PANDA_SYS_IPC_SERVICE_H__ */
